LOL, "SWIM" - this is sounding like 2010 here

The chunks in the coffee filter pic look exactly like water ice. Not that I'd normally say anything so conclusive on the basis of a photo, but there's your answer.
You may want to try resting your naphtha pulls in the fridge before carefully transferring them into a different vessel for the freeze precip. A pyrex jug makes for a handy resting vessel.
Do not rinse DMT freebase with ethanol, it is exceedingly soluble in even fairly weak spirit at anything much above -18°C. Pretty much anything that dissolves naphtha will also dissolve DMT, but if you can get hold of some ice cold pentane, that would be your best bet. I suppose decanted liquid butane would also do the job, just as long as due caution was exercise with the attendant safety measures. Don't be a statistic.
Dangula wrote:It's fairly straightforward, 100mg bark in 600mg d. water/100mg lye/150v&m N
With those amounts, you'll be lucky to see anything freeze precipitate anywhere. 100
mg bark will yield you 300µg of DMT at the very best, and if that's dissolved in 150mL naphtha (or did you use nitrogen?) then none of that will freeze precipitate, especially not in your seemingly feeble freezer.
Another problem seems to be that you are possibly somewhat on the lazy side and might benefit from paying greater attention to detail. Don't worry, I'm guilty of both of these too (that's how I know)!
“There is a way of manipulating matter and energy so as to produce what modern scientists call 'a field of force'. The field acts on the observer and puts him in a privileged position vis-à-vis the universe. From this position he has access to the realities which are ordinarily hidden from us by time and space, matter and energy. This is what we call the Great Work."
― Jacques Bergier, quoting Fulcanelli